With Blue Teflon Corrosion Resistant coating. For medium duty applications. Can be used in C.I.P., concrete, hollow core block, solid block, brick, or any other masonry material. Available in 2 diameters-- (3/16" and 1/4") and multiple lengths (1 1/4" up to 5"). Comes in 2 head styles Phillips, flat head and slotted hex washer head. Cuts threads into concrete, can later be removed for adjustment, shimming, leveling and then redriven into the same hole.